1999-2000 GMC Yukon 5.7L Custom Tuning Tune Installation Option (Scan cable and Traditional tune ONLY):Unblemished PCM (<5% paint missing) [+$125] Additional service offerings include:

Additional service offerings include:

2L engines can see up to 30hp on 91+ octane fuel

1 change in air/fuel ratio

The 0411 PCM is a powerful and versatile upgrade for many 1996–2000 GM trucks and SUVs originally equipped with older black-box PCMs

Exceptions can be made for extenuating circumstances

1999-2000 GMC Yukon 5.7L Custom Tuning Tune Installation Option (Scan cable and Traditional tune ONLY):Unblemished PCM (<5% paint missing) [+$125] Additional service offerings include:Black Bear Performance offers three different levels of custom tuning for your 1999 2000 GMC Yukon 5. 7L. From bone stock to heavily modified, we can help your engine perform as optimally as possible. We tend to see power gains in the 15 20hp 20 25ft lbs range and 1 2mpg improvement, depending on vehicle condition and configuration. Other improvements range from improved idle smoothness to better shift performance, improved towing and improved